>> The purpose of this analysis was to illustrate the need to account for the person’s age at death since the risk of Alzheimer’s disease rises with age and the

>> The purpose of this analysis was to illustrate the need to account for the person’s age at death since the risk of Alzheimer’s disease rises with age and therefore Alzheimer’s mortality would naturally be lower in occupations with a lower life expectancy. Just a nit: This sort of analysis seems lazy, because while it's true that without advanced age one's likelihood of dying from Alzheimers is lower, it's also true that without Alzheimers one's likelihood of dying at advanced age is lower. The dataset used for the non-Alzheimers death rate should be adjusted for what the death rate would be if Alzheimers didn't exist, not the death rate from all other age-related causes in a world where it does exist.